title: Stretched-coordinate PMLs for Maxwell's equations in the discontinuous Galerkin time-domain method.
abstract: The discontinuous Galerkin time-domain method (DGTD) is an emerging technique for the numerical simulation of time-dependent electromagnetic phenomena. For many applications it is necessary to model the infinite space which surrounds scatterers and sources. As a result, absorbing boundaries which mimic its properties play a key role in making DGTD a versatile tool for various kinds of systems. Popular techniques include the Silver-Mϋller boundary condition and uniaxial perfectly matched layers (UPMLs). We provide novel instructions for the implementation of stretched-coordinate perfectly matched layers in a discontinuous Galerkin framework and compare the performance of the three absorbers for a three-dimensional test system.
authors.affiliation: Institut for Theoretische Festkörperphysik and DFG-Center for Functional Nanostructures, Karlsruhe Institute of Technology, Germany. mkoenig@tfp.uni-karlsruhe.de
authors.forename: Michael
authors.initials: M
authors.lastname: König
authors.forename: Christopher
authors.initials: C
authors.lastname: Prohm
authors.forename: Kurt
authors.initials: K
authors.lastname: Busch
authors.forename: Jens
authors.initials: J
authors.lastname: Niegemann
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D004574:Electromagnetic Fields; D008962:Models, Theoretical